A mother substrate for an organic light-emitting display device includes a base substrate, a plurality of display areas arranged in an array on the base substrate, the array having a plurality of rows and a plurality of columns that are perpendicular to the plurality of rows. A secure computer is inserted into the private network to serve as the gateway to the unsecured network and a client subsystem is added to the workstation in order to control the transfer of data from the workstation to the secure computer. The conductive annular body may have a substrate seating surface adapted to receive the substrate and a plurality of scallops formed on a surface opposing the substrate seating surface.